My dude, Stealth Attacks aren't what reveal you, its attacking a creature that reveals you. If you use ability 2 it will reveal you. If you use Cloak and Dagger with your off hand, it will reveal you. Again, Cunning Salvo isn't an ability that reveals you. Attacking is what reveals you. Your poison axes you threw while stealthed DONT reveal you when you use Harrowing Storm. Its a bug my dude.